> Patricia,
> I do Argyrotypes which are a cousin to the Van Dyke process.  If you want
> to selenium tone try about 1/4 tsp of selenium in 500 ml of water BEFORE
> the fix for about 1-2 minutes.  I have tried stronger solutions which
> bleached the print.  The bleached print color was interesting but might not
> fit in with your project.  As to consistency of color, I have told myself
> not to worry. <grin> Just as 10 handblown glasses are not exactly like 10
> van dyke/argyrotypes will not be exactly alike.  One of the things that
> drives you mad with alt process is that anything changes everything.  Seems
> to me that I have to give up control and just go with the flow.  
> 
> Billie
> 
 Billie, do mean 1/4 teaspoon of Kodak Rapid Selenium Toner,  or some
other selenium compound?
Thanks.
John